Nexus 10 is great tablet! had a nexus 7 before it and that was good too, really can't fault the N10 one bit, runs all apps/movies/etc i throw at it super smoothly and the screen resolution is just sweet.Build quality is really nice imo, i genrally use it for browsing and reading comic book scans on, with the odd 1080p movie when travelling. Only thing i would say is definatly get the 32gb one if you aren't using it for just browing and the odd app, 16gb just fills to quickly
If its any help I got a Nexus-7 just before I went abroad at the beginning of October.
Found it incredibly good value for the £179 I paid for it (I believe its gone down to £159 now), but ummed-and-aahed between the 7 and 10 for quite some time. In the end I went for the Nexus7 32gig version because I wanted a tablet I could use for reading pdfs and writing.
In short it has turned out to be perfect for me. I found the 10 a bit too big (I had a laptop for that) whereas the 7 screen was big enough to play games (it has a quad-core Tegra 3 processor) and also to watch films/tv shows (something I didn't intend to do with it but it was just too damn convenient not to!).
It comes with the latest Android Jellybean OS and as an added unforeseen bonus when I logged into google it synced with my Phone (a Samsung S3) and suddenly I had all my apps from my phone on there.
My brother recently purchased a Samsung Galaxy Tab2 which he really, really likes but when I tried that against my N7 it seemed a little slow.
It depends what you really want it to do, but it plays games very well indeed (here is GTA Vice City on it for example ) and has pretty impressive sound quality too (I watch a fair amount of Youtube and Netflix videos on it).
What I would say though is that I purchased mine just as the new "2013" version came out, so mine was the last of the older models. If (and I don't know this for sure) the new model is better than the old it'll be pretty damn awesome, especially considering the only complaint I have for mine is a lack of SD compatibility (though I just link it up to my pc to port stuff across).
My one runs on Wifi and/or bluetooth which makes streaming stuff a breeze. If I caught outside without connectivity (it doesn't have a 3G connection, only wifi/bluetooth) I simply plug my mobile into it and switch on Tethering or convert my phone into a portable wifi hotspot.